A mass weighs 20 N at the surface of a planet of 3000 km radius. What is the mass's weight when it is in orbit 3000 km above the surface of the planet?
F = (Gm1m2)/r2 (well... not really)
Ug = mgy
The Attempt at a Solution
I don't even know. I'm trying to find the g on this planet but I'm not sure where that would lead me... Help please >_<